Probiotic (Lactobacillus/Bifidobacterium) — answers to probiotics
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Live bacteria or yeasts taken in the hope of benefiting health, usually the same kinds found in the gut.
Why it’s used
Taken for digestive health, often alongside antibiotics.
What the evidence is for
reducing antibiotic-associated diarrhea.
What the evidence says
Effects are strain- and condition-specific: what one strain does, another may not. The clearest evidence is for reducing antibiotic-associated diarrhoea and for preventing C. difficile infection, both moderate quality. For most other uses the evidence is limited and uncertain.
Context
Probiotics are measured in colony-forming units (CFU), not milligrams, so comparisons to a studied mass range don’t apply. The right strain matters more than the count, and the cited NIH source notes it isn’t yet known how much people need to take.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.